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Title:
BINARY SPATIAL SOUND MODULATOR FOR ADAPTIVE WAVEFIELD SHAPING
Document Type and Number:
WIPO Patent Application WO/2019/122942
Kind Code:
A8
Abstract:
A spatial sound modulator can comprise an array of controllable unit cells, each has a dimension of roughly half the wavelength of the target frequency. The spatial sound modulator can communicate with at least one feedback to achieve meaningful control of the sound field. The unit cell of the spatial sound modulator can include a membrane (200) fixed on a frame (250), a magnet (300) disposed on the membrane (200),and an electromagnet (500) configured to be in contact with the plateau (600) according to a magnetic force between the magnet (300) and electromagnet (500). The membrane (200) corresponding to the plateau (600) is configured to be spaced apart from the plateau (600) under a first state and to be in contact with the plateau (600) under a second state, thereby encode the wavefield by change the phase factor.

Inventors:
MA, Guancong (Flat Rd, 76/f Tower7 Le Prestige, Lohas Park,Tseung Kwan O, New Town, Hong Kong, CN)
SHENG, Ping (Flat Rd, 76/f Tower7 Le Prestige, Lohas Park,Tseung Kwan O, New Town,Sai Wan Ho, Hong Kong, CN)
FAN, Xiying (Room 2-332, Sakura Castle Wuhan Universit, Wuhan Hubei, CN)
FINK, Mathias, Alexandre (16 E. Laferriere, Meudon, 92190, FR)
Application Number:
IB2017/001680
Publication Date:
September 06, 2019
Filing Date:
December 20, 2017
Export Citation:
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Assignee:
THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (Clear Water Bay, Kowloon, Hong Kong, CN)
International Classes:
H04R9/06; H04R7/16
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